西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

苏里格气田加纤维压裂技术的应用研究

任斌1,刘国良1,张冕1,池晓明1,罗明良2   

  1. 1. 中国石油川庆钻探工程有限公司长庆井下技术作业公司,陕西西安710018
    2. 中国石油大学(华东)石油工程学院,山东青岛266580
  • 出版日期:2014-02-01 发布日期:2014-02-01

Application Research of Fiber Fracturing Technology at Sulige Gas Field

Ren Bin1, Liu Guoliang1, Zhang Mian1, Chi Xiaoming1, Luo Mingliang2   

  1. 1. Changqing Downhole Technology Company,Chuanqing Drilling Engineering Co. Ltd.,Xi’an,Shaanxi 710018,China
    2. School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China
  • Online:2014-02-01 Published:2014-02-01

摘要:

针对苏里格气田气井压裂返排过程中支撑剂回流的实际情况,制备出适合苏里格气井的压裂用纤维,并确定
了加入纤维的尺寸与浓度;通过模拟裂缝强制闭合模式,结合返排过程中临界返排流量、支撑剂沉降速度等计算模型,
编制了纤维防支撑剂回流压裂返排优化设计软件,并结合实际的压裂施工资料进行分析设计,为压裂液返排及控制支
撑剂回流提供指导。现场的加纤维压裂和控制放喷试验表明:所研制纤维适合苏里格地区气井的防支撑剂回流要求,
较为显著地减少了支撑剂回流量,提高了放喷排液速度,同时还降低了排液过程中由于支撑剂回流导致的针、闸阀损
毁情况发生的概率。

关键词: 压裂返排, 纤维, 支撑剂, 回流, 苏里格气田

Abstract:

To solve the problem of proppant backflow during the flowback progress in fracturing at Sulige gas field,a kind
of fracturing fiber was prepared. The suitable size and adding concentration in fracturing fluid were also determined in this
paper. By simulating the model of enforced crack closure and the model of proppant sinking rate,we developed the optimization
software of fibers anti-backflow of proppant,which could give useful messages for flowback of fracturing fluid and for
controlling the proppant backflow. The testing results of fiber-added fracturing and controlled discharge show that the prepared
fibers meet the need of anti-backflow of proppant in Sulige area. The use of fracturing fibers not only decreased the backflow
but also increased rate of drain blowout;moreover,it also reduced the damage chance of needle valve and gate valve during
the flowback.

Key words: fracturing flowback, fiber, proppant, flowback, Sulige Gas Field